Ultimate guide to smart charging

Why does it matter when I charge my EV?

There are two great reasons to use smart charging: it’s better for the environment and it saves you money. It’s a real win-win.

Let’s talk about the environment first. Over the course of an average 24-hour day, the types of energy that provide electricity to the National Grid vary. But a general way to break it down is it’s always a mix of renewables (wind energy, hydro-electric dams etc.) and non-renewables (gas, coal etc.)

Two of the most common factors with the largest impact on this mix, are the weather and electricity demand.

Why weather? Well, in Britain, there are lots of wind farms. To get the wind turbines turning and create electricity, there of course needs to be wind. On still days, there’s less renewable energy within the grid, forcing it to rely more heavily on non-renewable sources, such as coal.

Now onto demand. During the day, there are peaks of demand. In the UK, this is often highest in the evening, when most of the country’s residents are cooking, watching TV and charging their devices. During these peak times, the price of electricity goes up as there’s more stress on the grid, which is often exacerbated by a lack of green energy.

So, how do you make sure you’re using the cheapest and cleanest energy to charge your EV? You don’t. Let the smart charger do it for you.

How does a smart charger work?

A smart charger utilises windows of low energy demand – such as night time – to use renewable energy where possible, keeping cost to a minimum.

Here’s how it works.

The smart charger, and sometimes even the electric vehicle itself, will allow you to set a desired charge level. That is the battery percentage you’d like your EV to be charged up to. A charge-by time indicates to the charger when you need that charge level to be achieved by - in time for the morning school run for example.

A key thing to set is the minimum charge level. This sets the bare minimum amount of charge you need your EV to have, just bear in mind that achieving this percentage will be prioritised over using clean and/or cheaper energy. Once the minimum charge level is achieved, the smart charger will then optimise the remainder of the charge until it reaches the desired charge level.

Then the clever bit happens.

Your smart charger will relay these preferences into a dedicated cloud management system. Over the course of the charge, it’ll constantly monitor and adapt the charging to optimise energy use and meet your set preferences.

To maximise your savings, switch over to a variable energy tariff. Rates are often a lot cheaper overnight. Combining a smart charger with a variable energy tariff is often the most cost-effective way to refill your electric vehicle’s battery.